[SRU] [F] [linux-firmware] [PATCH 0/1] Fix an issue that HID devices are not scanned by Realtek 8822C

[Juerg Haefliger]

On Wed, 8 Jul 2020 00:12:55 +0800
Kai-Heng Feng <kai.heng.feng at canonical.com> wrote:

> > On Jul 7, 2020, at 19:09, Juerg Haefliger <juerg.haefliger at canonical.com> wrote:
> > 
> > On Tue, 7 Jul 2020 18:07:38 +0800
> > Kai-Heng Feng <kai.heng.feng at canonical.com> wrote:
> >   
> >>> On Jul 7, 2020, at 14:28, Juerg Haefliger <juerg.haefliger at canonical.com> wrote:
> >>> 
> >>> On Mon, 6 Jul 2020 17:09:24 +0800
> >>> Kai-Heng Feng <kai.heng.feng at canonical.com> wrote:
> >>>   
> >>>>> On Jul 6, 2020, at 16:24, You-Sheng Yang <vicamo.yang at canonical.com> wrote:
> >>>>> 
> >>>>> Shouldn't we apply this to Eoan and Bionic as well?      
> >>>> 
> >>>> Because there's no guarantee that new firmware works under older kernels, like many firmware introduced regressions happened before.    
> >>> 
> >>> What about adding the updated fw with a different name and modify the hwe
> >>> kernel to load that blob?    
> >> 
> >> It can be done, but we need to maintain an extra tree for HWE kernel...  
> > 
> > Isn't this bionic:linux-hwe-5.4? Or am I missing something?  
> 
> Can you please point out where the tree is?
> I do find bionic:hwe-5.4 but it only contains packaging stuff.

$ cranky checkout bionic:linux-hwe-5.4

All the info about where the kernels live is here:
https://git.launchpad.net/~canonical-kernel/+git/kteam-tools/tree/info/kernel-series.yaml


> > 
> >   
> >>> Or is that not worth the effort?    
> >> 
> >> I'd say it's not worth it :)  
> > 
> > Your typical hwe kernel user might disagree with you ;-) Does this work with
> > the 4.15 kernel but not with the 5.4 hwe kernel? If so then it's a regression.  
> 
> It didn't work for 4.15.
> At that time we were using out-of-tree Realtek Bluetooth driver, because in-tree driver doesn't have complete feature set, which includes proper HID support.

Oh well. I guess then it's not a regression.

...Juerg

 
> Kai-Heng
> 
> > 
> > ...Juerg
> > 
> >   
> >> Kai-Heng
> >>   
> >>> 
> >>> ...Juerg
> >>> 
> >>>   
> >>>> Kai-Heng
> >>>>   
> >>>>> 
> >>>>> You-Sheng Yang
> >>>>> 
> >>>>> On 2020-07-06 15:52, Kai-Heng Feng wrote:      
> >>>>>> BugLink: https://bugs.launchpad.net/bugs/1886390
> >>>>>> 
> >>>>>> [Impact]
> >>>>>> HID devices are not scanned by Realtek 8822C Bluetooth, so keyboard or
> >>>>>> mouse cannot connect to the host.
> >>>>>> 
> >>>>>> [Fix]
> >>>>>> New firmware release for 8822C.
> >>>>>> 
> >>>>>> [Test]
> >>>>>> HID devices can be scanned now. Pairing and connecting also work.
> >>>>>> 
> >>>>>> [Regression Potential]
> >>>>>> Low. It's an upstream firmware release.
> >>>>>> 
> >>>>>> Max Chou (1):
> >>>>>> rtl_bt: Update RTL8822C BT FW to 0x0999_3AA1
> >>>>>> 
> >>>>>> rtl_bt/rtl8822cu_fw.bin | Bin 54320 -> 55296 bytes
> >>>>>> 1 file changed, 0 insertions(+), 0 deletions(-)
> >>>>>>   
> >>>>> 
> >>>>> -- 
> >>>>> kernel-team mailing list
> >>>>> kernel-team at lists.ubuntu.com
> >>>>> https://lists.ubuntu.com/mailman/listinfo/kernel-team      
> 

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